John IV of Chalon-Arlay

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John IV lord of Arlay, prince of Orange
Coat of arms of Chalon (red shild with yellow ribbon) and Orange (blue bugle); over all the (claimed) pattern of Geneva.
Born	c. 1443
Died	(1502-04-15)15 April 1502
Buried	Convent of Cordeliers Lons-le-Saunier, County of Burgundy
Noble family	House of Chalon-Arlay
Spouse(s)	Jeanne de Bourbon Philiberte de Luxembourg
Issue	Philibert of Chalon Claudia of Chalon
Father	William VII lord of Arlay, prince of Orange
Mother	Catherine of Brittany

John IV of Chalon-Arlay or John of Chalon (c. 1443-15 April 1503) was a prince of Orange and lord of Arlay. He played an important role in the Mad War, a series of conflicts in which aristocrats sought to resist the expansion and centralisation of power under the French monarch.